popcorn convection n.— «Popcorn Convection. Slang for showers and thunderstorms that form on a scattered basis with little or no apparent organization, usually during the afternoon in response to diurnal heating. Individual thunderstorms...
popcorn convection n.— «SCT POPCORN CONVECTION IS EXPECTED OVR THE SERN QUARTER OF THE NATION IN THE INCREASINGLY MOIST AIR MASS SOUTH OF THIS FRONT. ANOTHER ROUND OF HVY TSTRMS IS LIKELY SAT AFTN/EVENING ALG THE COLD FRONT/DRYLINE XTNDG...